EP3384171B1 - Jaw clutch - Google Patents

Jaw clutch Download PDF

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Publication number
EP3384171B1
EP3384171B1 EP16753931.1A EP16753931A EP3384171B1 EP 3384171 B1 EP3384171 B1 EP 3384171B1 EP 16753931 A EP16753931 A EP 16753931A EP 3384171 B1 EP3384171 B1 EP 3384171B1
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EP
European Patent Office
Prior art keywords
coupling
coupling flange
profile
claws
flanges
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Active
Application number
EP16753931.1A
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German (de)
French (fr)
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EP3384171A1 (en
Inventor
Rolf Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ContiTech Vibration Control GmbH
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ContiTech Vibration Control GmbH
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Publication of EP3384171A1 publication Critical patent/EP3384171A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
    • F16D3/68—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/78—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings

Definitions

  • the invention relates to a dog clutch having a first and a second coupling flange and at least one elastic connecting element, wherein the coupling flanges each have at least two claws, and that connecting element has recesses, the coupling flanges are opposite and engage the claws of the coupling flanges so in the recesses of the connecting element, each of which alternately a claw of the first coupling flange and a claw of the second coupling flange in the circumferential direction successively come to lie in the recesses of the connecting element, wherein the coupling flanges each have a arranged on the outer circumference of the coupling flanges circumferential and circumferentially annularly closed reinforcement, with the claws cohesively can be connected.
  • Elastic jaw clutches have long been known, for example, to compensate for torque shocks or irregularities in the rotational movement of shafts and axles.
  • the claws of the coupling flanges can take a variety of forms.
  • DE 2253041 A1 and the DE 4307365 A1 show such jaw clutches in various embodiments.
  • the said claw couplings have in common that the coupling flanges are formed of metal.
  • the aim is also for the generic jaw clutches to form the coupling flanges made of plastic. Since the torques to be transmitted can become very high, in particular with pulse-type amplification, there is the disadvantage that jaw clutches made of plastic are either particularly large Diameter or in operation there is a risk that the jaws of the coupling flanges break off.
  • the US 2,891,395 also shows a generic jaw clutch, in which the coupling flanges each have a circumferential and circumferentially annularly closed reinforcement arranged on the outer circumference of the coupling flanges.
  • This annular closed reinforcement acts similar to barrel staves on the claws of the coupling flanges, so that they can not break away to the outside.
  • plastic it would be desirable to improve the stability of the claws of the respective coupling flanges even more to improve stability.
  • the invention has for its object to improve a dog clutch of the type described in such a way that even with the use of plastics through the couplings high torques without risk of breakage in the smallest possible size are transferable.
  • the reinforcements in the axial direction each have a curved profile with profile valleys and profile heights
  • the profiles are arranged axially such that the profile valleys of the first coupling flange with the profile heights of the second coupling flange and the profile heights of the first coupling flange with the Profile valleys of the second coupling flange correspond and there is an axial distance between the profiles.
  • the profile heights are expediently assigned to the respective claws, so that there is a particularly good support effect here.
  • the axial distance between the profiles allows a certain offset in the circumferential direction, without touching the profiles.
  • an elastic cushioning of the first against the second coupling flange via the elastomeric connecting element without direct contact of the coupling flanges is possible.
  • FIG. 1 an overview of a dog clutch according to the invention is shown in an exploded view.
  • the jaw clutch has a first coupling flange 1 and a second coupling flange 2, which are each formed from a plastic material and are located in the axial direction opposite.
  • the coupling flanges 1 and 2 each have a bore 3a, 3b with a toothing, through which in each case a not shown here shaft portion is pluggable.
  • an elastic connecting element 4 is arranged, which has a plurality of recesses 5 in the circumferential direction.
  • Each coupling flange 1 and 2 has four claws 6, of which only the claws 6 of the coupling flange 1 are visible.
  • the recesses 5 of the elastic element 4 correspond to the claws 6, so that the claws 6 engage in the recesses 5 in the assembly.
  • the transmission of torques from coupling flange 1 to coupling flange 2 can then take place in that the claws 6 of the coupling flange 1 act on the claws 6 of the coupling flange 2 via the elastic element 4.
  • the elastic element 4 provides damping of any torque peaks.
  • each coupling flange 1 and 2 Externally around the claws 6 around each coupling flange 1 and 2 each have an annular reinforcement 7 is arranged.
  • the coupling flange 1 is shown in a perspective view.
  • the elastic element 4 and the coupling flange 2 are not shown here.
  • the claws 6 are materially connected to the outside surrounding reinforcement 7, the reinforcement 7 is in turn materially connected to the coupling flange 1, so that the coupling flange is formed similar to a cup.
  • the reinforcement 7 has a profile with profile heights 8 and profile valleys 9 in the axial direction.
  • the profile heights 8 are each associated with the claws 6.
  • the arrangement of the profile heights 8 in correspondence with the jaws 6 results in a particularly good supporting effect of the reinforcement 7.
  • FIG. 3 is an external view of the jaw clutch according to the invention shown in the assembly.
  • the profile heights 8 of the reinforcement 7 of the coupling flange 1 correspond to the profile valleys 9 of the coupling flange 2 and vice versa.
  • a gap 10 is arranged, which is dimensioned so that a contact between the two reinforcements is excluded even with maximum expected rotation of the coupling flange 1 against the coupling flange 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Description

Die Erfindung betrifft eine Klauenkupplung mit einem ersten und einem zweiten Kupplungsflansch und mindestens einem elastischen Verbindungselement, wobei die Kupplungsflansche je mindestens zwei Klauen aufweisen, und dass Verbindungselement Aussparungen aufweist, die Kupplungsflansche sich gegenüberliegen und die Klauen der Kupplungsflansche derart in die Aussparungen des Verbindungselementes eingreifen, das jeweils abwechselnd eine Klaue des ersten Kupplungsflansches und eine Klaue des zweiten Kupplungsflansches in Umfangsrichtung aufeinanderfolgend in den Aussparungen des Verbindungselementes zu liegen kommen, wobei die Kupplungsflansche jeweils eine am Außenumfang der Kupplungsflansche angeordnete umlaufende und in Umfangsrichtung ringförmig geschlossene Verstärkung aufweisen, mit der die Klauen stoffschlüssig verbunden sein können.The invention relates to a dog clutch having a first and a second coupling flange and at least one elastic connecting element, wherein the coupling flanges each have at least two claws, and that connecting element has recesses, the coupling flanges are opposite and engage the claws of the coupling flanges so in the recesses of the connecting element, each of which alternately a claw of the first coupling flange and a claw of the second coupling flange in the circumferential direction successively come to lie in the recesses of the connecting element, wherein the coupling flanges each have a arranged on the outer circumference of the coupling flanges circumferential and circumferentially annularly closed reinforcement, with the claws cohesively can be connected.

Elastische Klauenkupplungen sind seit langem bekannt, um beispielsweise Drehmomentstöße oder Ungleichmäßigkeiten der Drehbewegung von Wellen und Achsen auszugleichen. Dabei können die Klauen der Kupplungsflansche eine Vielzahl verschiedener Formen annehmen.Elastic jaw clutches have long been known, for example, to compensate for torque shocks or irregularities in the rotational movement of shafts and axles. The claws of the coupling flanges can take a variety of forms.

Die DE 2234437 A1 , DE 2253041 A1 und die DE 4307365 A1 zeigen derartige Klauenkupplungen in verschiedenen Ausführungsformen. Den genannten Klauenkupplungen ist gemeinsam, dass die Kupplungsflansche aus Metall ausgebildet sind. Zunehmend wird jedoch auch für die gattungsgemäßen Klauenkupplungen angestrebt, die Kupplungsflansche aus Kunststoff auszubilden. Da die zu übertragenden Drehmomente insbesondere bei impulsartiger Verstärkung sehr hoch werden können, besteht der Nachteil, dass Klauenkupplungen aus Kunststoff entweder besonders große Durchmesser aufweisen müssen oder im Betrieb das Risiko besteht, dass die Klauen der Kupplungsflansche abbrechen.The DE 2234437 A1 . DE 2253041 A1 and the DE 4307365 A1 show such jaw clutches in various embodiments. The said claw couplings have in common that the coupling flanges are formed of metal. Increasingly, however, the aim is also for the generic jaw clutches to form the coupling flanges made of plastic. Since the torques to be transmitted can become very high, in particular with pulse-type amplification, there is the disadvantage that jaw clutches made of plastic are either particularly large Diameter or in operation there is a risk that the jaws of the coupling flanges break off.

Die US 2,891,395 zeigt ebenfalls eine gattungsgemäße Klauenkupplung, bei der die Kupplungsflansche jeweils eine am Außenumfang der Kupplungsflansche angeordnete umlaufende und in Umfangsrichtung ringförmig geschlossene Verstärkung aufweisen.The US 2,891,395 also shows a generic jaw clutch, in which the coupling flanges each have a circumferential and circumferentially annularly closed reinforcement arranged on the outer circumference of the coupling flanges.

Diese ringförmig geschlossene Verstärkung wirkt ähnlich wie Fassdauben auf die Klauen der Kupplungsflansche, sodass diese nicht nach außen wegbrechen können. Für die Verwendung von Kunststoff wäre es aber zur Verbesserung der Stabilität wünschenswert, die Klauen der jeweiligen Kupplungsflansche noch besonders zu verstärken.This annular closed reinforcement acts similar to barrel staves on the claws of the coupling flanges, so that they can not break away to the outside. For the use of plastic but it would be desirable to improve the stability of the claws of the respective coupling flanges even more to improve stability.

Der Erfindung liegt die Aufgabe zugrunde, eine Klauenkupplung der eingangs geschilderten Art derart zu verbessern, dass auch bei Einsatz von Kunststoffen durch die Kupplungen hohe Drehmomente ohne Bruchgefahr bei möglichst kleiner Baugröße übertragbar sind.The invention has for its object to improve a dog clutch of the type described in such a way that even with the use of plastics through the couplings high torques without risk of breakage in the smallest possible size are transferable.

Diese Aufgabe wird dadurch gelöst, dass die Verstärkungen in axialer Richtung jeweils ein geschwungenes Profil mit Profiltälern und Profilhöhen aufweisen, wobei die Profile axial derart angeordnet sind, dass die Profiltäler des ersten Kupplungsflansches mit den Profilhöhen des zweiten Kupplungsflansches und die Profilhöhen des ersten Kupplungsflansches mit den Profiltälern des zweiten Kupplungsflansches korrespondieren und zwischen den Profilen ein axialer Abstand besteht.This object is achieved in that the reinforcements in the axial direction each have a curved profile with profile valleys and profile heights, the profiles are arranged axially such that the profile valleys of the first coupling flange with the profile heights of the second coupling flange and the profile heights of the first coupling flange with the Profile valleys of the second coupling flange correspond and there is an axial distance between the profiles.

Die Profilhöhen sind dabei zweckmäßigerweise den jeweiligen Klauen zugeordnet, sodass hier eine besonders gute Stützwirkung besteht. Der axiale Abstand zwischen den Profilen erlaubt einen gewissen Versatz in Umfangsrichtung, ohne dass sich die Profile berühren. So ist eine elastische Abfederung des ersten gegen den zweiten Kupplungsflansch über das elastomere Verbindungselement ohne direkte Berührung der Kupplungsflansche möglich.The profile heights are expediently assigned to the respective claws, so that there is a particularly good support effect here. The axial distance between the profiles allows a certain offset in the circumferential direction, without touching the profiles. Thus, an elastic cushioning of the first against the second coupling flange via the elastomeric connecting element without direct contact of the coupling flanges is possible.

Anhand der Zeichnung wird nachstehend ein Beispiel der Erfindung näher erläutert. Es zeigt

  • Figur 1 eine Explosion Darstellung einer erfindungsgemäßen Klauenkupplung
  • Figur 2 eine perspektivische Darstellung eines Kupplungsflansches einer erfindungsgemäßen Klauenkupplung und
  • Figur 3 eine perspektivische Darstellung eines Kupplungsflansches der erfindungsgemäßen Klauenkupplung.
With reference to the drawing, an example of the invention will be explained in more detail below. It shows
  • FIG. 1 an explosion representation of a dog clutch according to the invention
  • FIG. 2 a perspective view of a coupling flange of a dog clutch according to the invention and
  • FIG. 3 a perspective view of a coupling flange of the dog clutch according to the invention.

In der Figur 1 ist eine Übersicht über eine erfindungsgemäße Klauenkupplung in einer Explosionszeichnung gezeigt. Die Klauenkupplung weist einen ersten Kupplungsflansch 1 und einen zweiten Kupplungsflansch 2 auf, die jeweils aus einem Kunststoffmaterial ausgebildet sind und sich in axialer Richtung gegenüber liegen. Die Kupplungsflansche 1 und 2 weisen jeweils eine Bohrung 3a, 3b mit einer Verzahnung auf, durch die jeweils ein hier nicht gezeigter Wellenabschnitt steckbar ist.In the FIG. 1 an overview of a dog clutch according to the invention is shown in an exploded view. The jaw clutch has a first coupling flange 1 and a second coupling flange 2, which are each formed from a plastic material and are located in the axial direction opposite. The coupling flanges 1 and 2 each have a bore 3a, 3b with a toothing, through which in each case a not shown here shaft portion is pluggable.

Zwischen den Kupplungsflansche 1 und 2 ist ein elastisches Verbindungselement 4 angeordnet, welches in Umfangsrichtung mehrere Aussparungen 5 aufweist. Jeder Kupplungsflansch 1 und 2 weist vier Klauen 6 auf, von denen nur die Klauen 6 des Kupplungsflansches 1 sichtbar sind. Die Aussparungen 5 des elastischen Elementes 4 korrespondieren mit den Klauen 6, sodass die Klauen 6 im Zusammenbau in die Aussparungen 5 eingreifen. Die Übertragung von Drehmomenten von Kupplungsflansch 1 auf Kupplungsflansch 2 kann dann dadurch erfolgen, dass die Klauen 6 des Kupplungsflansches 1 über das elastische Element 4 auf die Klauen 6 des Kupplungsflansches 2 einwirken. Das elastische Element 4 sorgt für eine Dämpfung eventueller Drehmomentspitzen.Between the coupling flanges 1 and 2, an elastic connecting element 4 is arranged, which has a plurality of recesses 5 in the circumferential direction. Each coupling flange 1 and 2 has four claws 6, of which only the claws 6 of the coupling flange 1 are visible. The recesses 5 of the elastic element 4 correspond to the claws 6, so that the claws 6 engage in the recesses 5 in the assembly. The transmission of torques from coupling flange 1 to coupling flange 2 can then take place in that the claws 6 of the coupling flange 1 act on the claws 6 of the coupling flange 2 via the elastic element 4. The elastic element 4 provides damping of any torque peaks.

Außen um die Klauen 6 herum ist je Kupplungsflansch 1 und 2 jeweils eine ringförmige Verstärkung 7 angeordnet.Externally around the claws 6 around each coupling flange 1 and 2 each have an annular reinforcement 7 is arranged.

In der Figur 2 ist der Kupplungsflansch 1 in einer perspektivischen Darstellung gezeigt. Zur besseren Übersicht ist hier das elastische Element 4 und der Kupplungsflansch 2 nicht gezeigt. Die Klauen 6 sind mit der sie außen umgebenden Verstärkung 7 stoffschlüssig verbunden, die Verstärkung 7 ist ihrerseits mit dem Kupplungsflansch 1 stoffschlüssig verbunden, sodass der Kupplungsflansch ähnlich eines Napfes ausgebildet ist.In the FIG. 2 the coupling flange 1 is shown in a perspective view. For a better overview, the elastic element 4 and the coupling flange 2 are not shown here. The claws 6 are materially connected to the outside surrounding reinforcement 7, the reinforcement 7 is in turn materially connected to the coupling flange 1, so that the coupling flange is formed similar to a cup.

Die Verstärkung 7 weist in axialer Richtung ein Profil mit Profilhöhen 8 und Profiltälern 9 auf. Die Profilhöhen 8 sind jeweils den Klauen 6 zugeordnet. Durch die Anordnung der Profilhöhen 8 in Korrespondenz zu den Klauen 6 ergibt sich eine besonders gute Stützwirkung der Verstärkung 7.The reinforcement 7 has a profile with profile heights 8 and profile valleys 9 in the axial direction. The profile heights 8 are each associated with the claws 6. The arrangement of the profile heights 8 in correspondence with the jaws 6 results in a particularly good supporting effect of the reinforcement 7.

In Figur 3 ist eine Außenansicht der erfindungsgemäßen Klauenkupplung im Zusammenbau gezeigt. Die Profilhöhen 8 der Verstärkung 7 des Kupplungsflansches 1 korrespondieren mit den Profiltälern 9 des Kupplungsflansches 2 und umgekehrt.In FIG. 3 is an external view of the jaw clutch according to the invention shown in the assembly. The profile heights 8 of the reinforcement 7 of the coupling flange 1 correspond to the profile valleys 9 of the coupling flange 2 and vice versa.

Zwischen den beiden gegenüberliegenden Verstärkungen 7 ist ein Spalt 10 angeordnet, der so bemessen ist, dass eine Berührung der beiden Verstärkungen auch bei maximal zu erwartender Verdrehung des Kupplungsflansches 1 gegen den Kupplungsflansch 2 ausgeschlossen ist.Between the two opposing reinforcements 7, a gap 10 is arranged, which is dimensioned so that a contact between the two reinforcements is excluded even with maximum expected rotation of the coupling flange 1 against the coupling flange 2.

BezugszeichenlisteLIST OF REFERENCE NUMBERS (Teil der Beschreibung)(Part of the description)

11
Erster KupplungsflanschFirst coupling flange
22
Zweiter KupplungsflanschSecond coupling flange
3a, 3b3a, 3b
Bohrungen der Kupplungsflansche 1, 2Holes of the coupling flanges 1, 2
44
elastisches Verbindungselementelastic connecting element
55
Aussparungen im elastischen Element 4Recesses in the elastic element 4
66
Klauen der Kupplungsflansche 1, 2Claws of the coupling flanges 1, 2
77
ringförmige Verstärkungenannular reinforcements
88th
Profilhöhen der ringförmigen Verstärkungen 7Profile heights of the annular reinforcements 7
99
Profiltäler der ringförmigen Verstärkungen 7Profile valleys of the annular reinforcements 7
1010
Spalt zwischen den Verstärkungen 7Gap between the reinforcements 7

Claims (1)

  1. Claw coupling having a first and a second coupling flange (1, 2) and at least one elastic connecting element (4), the coupling flanges (1, 2) having in each case at least two claws (6), and the connecting element (4) having cut-outs (5), the coupling flanges (1, 2) lying opposite one another, and the claws (6) of the coupling flanges (1, 2) engaging into the cut-outs (5) of the connecting element (4) in such a way that a claw (6) of the first coupling flange (1) and a claw (6) of the second coupling flange (2) in each case in an alternating manner come to lie in the cut-outs (5) of the connecting element (4) so as to follow one another in the circumferential direction, the coupling flanges (1, 2) in each case having a circumferential reinforcement (7) which is arranged on the outer circumference of the coupling flanges (1, 2), is closed in an annular manner in the circumferential direction, and to which the claws (6) can be connected in an integrally joined manner, characterized in that the reinforcements (7) in each case have a curved profile in the axial direction with profile troughs (9) and profile peaks (8), the profiles being arranged axially in such a way that the profile troughs (9) of the first coupling flange (1) correspond with the profile peaks (8) of the second coupling flange (2) and the profile peaks (8) of the first coupling flange (1) correspond with the profile troughs (9) of the second coupling flange (2), and there is an axial spacing (10) between the profiles.
EP16753931.1A 2015-11-30 2016-08-22 Jaw clutch Active EP3384171B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015223792.3A DE102015223792A1 (en) 2015-11-30 2015-11-30 claw clutch
PCT/EP2016/069761 WO2017092889A1 (en) 2015-11-30 2016-08-22 Jaw clutch

Publications (2)

Publication Number Publication Date
EP3384171A1 EP3384171A1 (en) 2018-10-10
EP3384171B1 true EP3384171B1 (en) 2019-10-09

Family

ID=56740249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16753931.1A Active EP3384171B1 (en) 2015-11-30 2016-08-22 Jaw clutch

Country Status (3)

Country Link
EP (1) EP3384171B1 (en)
DE (1) DE102015223792A1 (en)
WO (1) WO2017092889A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891395A (en) * 1957-11-20 1959-06-23 Robert R Chater Flexible coupling
DE2234437A1 (en) 1972-07-13 1974-01-24 Freudenberg Carl Fa ELASTIC COUPLING
DE2253041A1 (en) 1972-10-28 1974-05-09 Krupp Gmbh CLAW CLUTCH
DE2418057C3 (en) * 1974-04-13 1980-11-27 Dieter Dipl.-Ing. Dr.-Ing. 2800 Bremen Grosskordt Elastic coupling for transmitting torque
US4172369A (en) * 1978-03-13 1979-10-30 Hayes Charles J Flexible coupling
DE4307365A1 (en) 1993-03-09 1994-10-13 Hackforth Gmbh & Co Kg Flexible dog coupling
CA2216271A1 (en) * 1996-09-20 1998-03-20 Q.M. Bearings & Power Transmission Ltd. Flexible coupling device
WO2010060625A1 (en) * 2008-11-26 2010-06-03 SGF SüDDEUTSCHE GELENKSCHEIBENFABRIK GMBH & CO. KG Device for the vibration-reducing transmission of torques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2017092889A1 (en) 2017-06-08
EP3384171A1 (en) 2018-10-10
DE102015223792A1 (en) 2017-06-01

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